NorthWestern Energy Group, Inc.
US ˙ NasdaqGS ˙ US6680743050

SecurityNWE / NorthWestern Energy Group, Inc.
InstitutionMacquarie Group Ltd
Latest Disclosed Ownership40,927 shares
Latest Disclosed Value $ 2,698,726
Macquarie Group Ltd reports 18.91% increase in ownership of NWE / NorthWestern Energy Group, Inc.

On May 15, 2026 - Macquarie Group Ltd filed a 13F-HR form disclosing ownership of 40,927 shares of NorthWestern Energy Group, Inc. (US:NWE) valued at $2,698,726 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 34,419 shares of NorthWestern Energy Group, Inc.. This represents a change in shares of 18.91% during the quarter. The current value of the position is $2,830,511 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F NORTHWESTERN ENERGY GROUP IN COM NEW 668074305 40,927 6,508 18.91 2,699 21.48 0.0126
2026-02-13 2025-12-31 13F NORTHWESTERN ENERGY GROUP IN COM NEW 668074305 34,419 -1,151,332 -97.10 2,221 -96.80 0.0097
2025-11-13 2025-09-30 13F NORTHWESTERN ENERGY GROUP IN COM NEW 668074305 1,185,751 -123,240 -9.41 69,497 3.49 0.0811
2025-08-14 2025-06-30 13F NORTHWESTERN ENERGY GROUP IN COM NEW 668074305 1,308,991 35,913 2.82 67,152 -8.85 0.0824
2025-08-14 2025-03-31 13F/A-1 NORTHWESTERN ENERGY GROUP IN COM NEW 668074305 1,273,078 -13,050 -1.01 73,673 7.15 0.0915
2025-05-15 2025-03-31 13F NORTHWESTERN ENERGY GROUP IN COM NEW 668074305 1,273,078 -13,050 73,673 0.0602
2025-02-14 2024-12-31 13F NORTHWESTERN ENERGY GROUP IN COM NEW 668074305 1,286,128 8,287 0.65 68,756 -5.97 0.0834
2024-11-14 2024-09-30 13F NORTHWESTERN ENERGY GROUP IN COM NEW 668074305 1,277,841 -150,720 -10.55 73,118 2.20 0.0789
2024-08-09 2024-06-30 13F NORTHWESTERN ENERGY GROUP IN COM NEW 668074305 1,428,561 -85,439 -5.64 71,542 -7.22 0.0821
2024-05-14 2024-03-31 13F NORTHWESTERN ENERGY GROUP IN COM NEW 668074305 1,514,000 -19,475 -1.27 77,108 -1.19 0.0875
2024-02-14 2023-12-31 13F NORTHWESTERN ENERGY GROUP IN COM NEW 668074305 1,533,475 341,583 28.66 78,038 36.24 0.0901
2023-11-14 2023-09-30 13F NORTHWESTERN COM NEW 668074305 1,191,892 41,597 3.62 57,282 -12.27 0.0720
2023-10-27 2023-06-30 13F/A-2 NORTHWESTERN COM NEW 668074305 1,150,295 29,320 2.62 65,291 0.49 0.0747
2023-10-12 2023-06-30 13F/A-1 NORTHWESTERN COM NEW 668074305 1,150,295 29,320 65,291 0.0656
2023-08-14 2023-06-30 13F NORTHWESTERN COM NEW 668074305 1,150,295 29,320 65,291 0.0662
2023-06-01 2023-03-31 13F/A-1 NORTHWESTERN COM NEW 668074305 1,120,975 25,692 2.35 64,974 -0.03 0.0772
2023-05-15 2023-03-31 13F NORTHWESTERN COM NEW 668074305 1,120,975 25,692 64,974 0.0596
2023-02-21 2022-12-31 13F NORTHWESTERN COM NEW 668074305 1,095,283 60,089 5.80 64,994 26.92 0.0768
2022-11-14 2022-09-30 13F NORTHWESTERN COM NEW 668074305 1,035,194 14,835 1.45 51,206 -15.05 0.0628
2022-08-17 2022-06-30 13F/A-1 NORTHWESTERN COM NEW 668074305 1,020,359 -110,738 -9.79 60,276 -11.90 0.0677
2022-08-15 2022-06-30 13F NORTHWESTERN COM NEW 668074305 1,020,359 -110,738 60,276 0.0216
2022-05-16 2022-03-31 13F NORTHWESTERN COM NEW 668074305 1,131,097 33,493 3.05 68,420 9.05 0.0520
2022-02-11 2021-12-31 13F Northwestern COM NEW 668074305 1,097,604 16,020 1.48 62,739 1.23 0.0523
2021-11-12 2021-09-30 13F NORTHWESTERN COM NEW 668074305 1,081,584 -808 -0.07 61,975 -4.92 0.0528
2021-08-13 2021-06-30 13F NORTHWESTERN COM NEW 668074305 1,082,392 -125,233 -10.37 65,184 -17.22 0.0535
2021-05-14 2021-03-31 13F NORTHWESTERN COM NEW 668074305 1,207,625 -146,286 -10.80 78,739 -0.26 0.1113
2021-02-16 2020-12-31 13F NORTHWESTERN COM NEW 668074305 1,353,911 -103,524 -7.10 78,946 11.36 0.1153
2020-11-13 2020-09-30 13F NORTHWESTERN COM NEW 668074305 1,457,435 -1,647 -0.11 70,890 -10.89 0.1200
2020-08-11 2020-06-30 13F NORTHWESTERN COM NEW 668074305 1,459,082 31,603 2.21 79,549 -6.86 0.1370
2020-05-15 2020-03-31 13F NORTHWESTERN COM NEW 668074305 1,427,479 20,472 1.46 85,406 -15.31 0.1754
2020-03-18 2019-12-31 13F/A-2 NORTHWESTERN COM NEW 668074305 1,407,007 -16,989 -1.19 100,840 -5.64 0.1440
2020-02-28 2019-12-31 13F/A-1 NORTHWESTERN COM NEW 668074305 1,407,007 0 100,840 0.1457
2020-02-14 2019-12-31 13F NORTHWESTERN COM NEW 668074305 1,407,007 -16,989 100,840 126,545.6540
2019-11-14 2019-09-30 13F NORTHWESTERN COM NEW 668074305 1,423,996 1,073 0.08 106,871 4.10 0.1791
2019-11-06 2019-06-30 13F/A-2 NORTHWESTERN COM NEW 668074305 1,422,923 -2,062 -0.14 102,664 2.32 0.1731
2019-09-24 2019-06-30 13F/A-1 NORTHWESTERN COM NEW 668074305 1,422,923 0 102,664 0.1746
2019-08-14 2019-06-30 13F NORTHWESTERN COM NEW 668074305 1,422,923 -2,062 102,664
2019-05-15 2019-03-31 13F NORTHWESTERN COM NEW 668074305 1,424,985 -79,234 -5.27 100,334 12.22 0.1711
2019-02-15 2018-12-31 13F NORTHWESTERN COM NEW 668074305 1,504,219 91,298 6.46 89,411 7.88 0.1728
2018-11-15 2018-09-30 13F NORTHWESTERN COM NEW 668074305 1,412,921 273,214 23.97 82,882 27.02 0.1350
2019-03-21 2018-06-30 13F/A-1 NORTHWESTERN COM NEW 668074305 1,139,707 115,180 11.24 65,249 18.38 0.1125
2018-08-14 2018-06-30 13F NORTHWESTERN COM NEW 668074305 1,139,707 115,180 65,249
2018-05-11 2018-03-31 13F NORTHWESTERN COM NEW 668074305 1,024,527 56,449 5.83 55,119 -3.57 0.1004
2018-02-14 2017-12-31 13F NORTHWESTERN COM NEW 668074305 968,078 86,652 9.83 57,159 13.89 0.1011
2017-11-08 2017-09-30 13F NORTHWESTERN COM NEW 668074305 881,426 -541,906 -38.07 50,189 -42.21 0.0900
2017-08-14 2017-06-30 13F NORTHWESTERN COM NEW 668074305 1,423,332 2,365 0.17 86,851 4.12 0.1588
2017-05-15 2017-03-31 13F NORTHWESTERN COM NEW 668074305 1,420,967 -11,784 -0.82 83,411 2.37 0.1516
2017-03-30 2016-12-31 13F/A-1 NORTHWESTERN Common Stock 668074305 1,432,751 28,501 2.03 81,481 0.86 0.1560
2017-02-15 2016-12-31 13F NORTHWESTERN Common Stock 668074305 1,432,751 81,481
2016-11-15 2016-09-30 13F NORTHWESTERN Common Stock 668074305 1,404,250 10,591 0.76 80,787 -8.09 0.1554
2016-09-14 2016-06-30 13F/A-1 NORTHWESTERN Common Stock 668074305 1,393,659 128,647 10.17 87,898 12.52 0.1726
2016-08-15 2016-06-30 13F NORTHWESTERN Common Stock 668074305 1,393,659 87,898
2016-05-16 2016-03-31 13F NORTHWESTERN Common Stock 668074305 1,265,012 43,640 3.57 78,115 17.89 0.1574
2016-02-16 2015-12-31 13F NORTHWESTERN Common Stock 668074305 1,221,372 34,625 2.92 66,259 3.72 0.1360
2015-11-16 2015-09-30 13F NORTHWESTERN Common Stock 668074305 1,186,747 75,831 6.83 63,883 17.96 0.1370
2015-08-21 2015-06-30 13F/A-1 NORTHWESTERN Common Stock 668074305 1,110,916 81,376 7.90 54,157 -2.21 0.1072
2015-08-14 2015-06-30 13F NORTHWESTERN Common Stock 668074305 1,110,916 54,157
2015-05-18 2015-03-31 13F NORTHWESTERN Common Stock 668074305 1,029,540 57,112 5.87 55,379 0.65 0.1087
2015-02-17 2014-12-31 13F NORTHWESTERN COMMON 668074305 972,428 121,749 14.31 55,020 42.59 0.1135
2014-11-14 2014-09-30 13F NORTHWESTERN COMMON 668074305 850,679 48,761 6.08 38,587 -7.80 0.0828
2014-08-14 2014-06-30 13F NORTHWESTERN COMMON 668074305 801,918 5,241 0.66 41,852 10.76 0.0934
2014-05-15 2014-03-31 13F NORTHWESTERN Common 668074305 796,677 81,307 11.37 37,786 21.93 0.0652
2014-02-14 2013-12-31 13F NORTHWESTERN Common Stock 668074305 715,370 32,934 4.83 30,990 1.09 0.0556
2013-11-14 2013-09-30 13F NORTHWESTERN Common Stock 668074305 682,436 46,174 7.26 30,655 20.75 0.0599
2013-08-16 2013-06-30 13F/A-1 NORTHWESTERN COMMON 668074305 636,262 636,262 25,387 0.0554
2013-08-14 2013-06-30 13F NORTHWESTERN COMMON 668074305 636,262 25,387 0.0554
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.